Temperature changing and air circulating



1,643,346 Sept. 27, 1927- c, MOORE TEMPERATURE CHANGING AND AIR CIRCULATING APPLIANCE Filed Aug. 15, 1924 2 Sheets-Sheet 1 my! my 2 jkfiziar' 4776 f/ Aware Se 1t. 27 1927.

p c. A. MOORE TEMPERATURE CHANGING AND AIR CIRCULA'I'ING APPLIANCE Filed Aug. 15, 1924 2 Sheets-Sheet 2 Patented seat. 27, 1927.

CHARLES A. MOORE, OF ST. PAUL, HINNE SOTAL TEMPERATURE-OEANGING AND Am-cmcum'rms arrnuwon.

Application filed August 15, 1824. Serial No. 782,347.

My invention relates to an improved appliance for affecting the temperature of and circulating air in a storage or other room to refrigerate or heat the room or ventilate it under refrigeration or heating.

One object of the invention is to provide an appliance of this nature wherein coiled pipe is employed as a duct for air and also as a contalner for a medium to afiect the temperature of air-within the duct.

Another object is to supply an appliance of this kind, wherein a duct for directing air from one level to another is formed of a series of superim' osed coiled pipe sections,

the pi e of eac section being fed and draine independently of the pipes of the other sections.

A further object is to provide a device, as above, the pipes of the individual sections being connected with a common source of supply and a common drain, the inlet side of each pipe being fitted with cut-0E mechanism to permit of selective use of the different sections of the duct.

An additional object is to provide an appliance of the instant type, the structural arrangement thereof making for simplicity, durabllity, efliciency and low cost of manufacture. With the foregoing and other objects in view, which will appear in the following description, the invention resides in the novel combination and arrangement of parts and in the details of construction hereinafter described and claimed.

In the drawings, Fig. 1 is a side elevation of an appliance embodying my invention; Fig.- 2 is a central, longitudinal sectional View thereof, the same being taken as on the line 2 2 of Fig. 1; Fig. 3 is an enlarged sectional view taken horizontally ofFig. 1 as on the line 3-3 of said Fig. 1;' Fig. 4 is a detail sectional view taken on the-line H of Fig. 3 and Fig. 5 is an elevational view of one of the duct sections and showing the length of pipe, which constitutes the same, turned coil upon coil.

Referring to the drawings, an embodiment of the present invention will be seen in Fig. 1. This structure is placed in a storage or other room to circulate the air therein with or without ventilation and to refrigerate or heat the room as may be desired. Said structure includes an outer duct A and 5 an inner duct B arranged concentrically within said outer duct. The outer duct A has a cap 0 thereon. An upwardly extendlng branch-duct 10, reaching through and carried by the cap C slips, at its lower end, into the upper end of the inner duct B and terminates at a point short of the ceiling of a room in which the structure is placed. The lower end of the inner duct B depends beneath the lower edge of the outer duct A, said inner duct bein supplied with two branch-ducts 11, 12, t eformer being pro-. ected through the wall of the room and into the outer air and the latter reaching under the wall of the outer duct A and mto the room. These branch-ducts 11, 12, are respectlvely fitted with a damper 13 and a plu 14 through the medium of which theflow of air, may be controlled. A branch duct 15 rising from the cap C and communicating with the outer duct is lead into the outer air from the upper portion of the room in which the appliance is installed, said branch-duct 15 being provided with a thimble 16 fitted with a plug 17 and with a damper 18 above the thimb e. The inner duct B and its branch-ducts 10, 11 and 12 are sim 1e sheet metal conduits. The outer duct A, owever, is of a peculiar and novel construction, which will now be described. Said duct A consists of a series of superimposed, vertically aligned ring-like sections a. Each section comprises a length of ipe 19 turned; coil upon coil as shown, sai sections being assembled with the pipes 19 winding in the same direction. To unite said duct sections a in unitary form and to support the same, I provide a plurality of spaced standards 20, which, as illustrated, consist of channel irons, the flan thereof being turned against the outer sides of the duct sections a and the lower ends of said channel irons bein seated on a ring-like base 21 of angle iron. nside of the duct sections a are straps 22, one for each standard 20, each strap 0 posi its respective standard. Bolts 23 reac mg rough said straps 22 and standards 20 pass between turns of the pipes 19 and are supplied with nuts 23 tightened against the outer faces of the webs of the 05 standards 20. Said bolts 23 may be of the ribbon type, and the pipes 19 ma be indented at oints of contact with said bolts, whatever t e type thereof to receive the same and thereby form comparatively tight walls in the duct A. The ends of the pipe 19 of each duct section a are turnedoutward (Fig. '3) and flanged as at 19. litising side by side on the outside ofthe duct A are two manifolds 24, 25, the former being adapted to be a connected with a source of sup ly oi temperature afiecting medium and t e latter with a drain or a pipe returning to said scource of supply. Nipples 25 connect the upper ends of pipes 19 with the manifold 25 and to connections 24, fitted with valves 26, join the lower ends of said pipes 19 with the manifold 24. With the pipes 19 containing an ettective relrigeratin medium, the duct sections or become troste 'suficiently to close it the limited spaces, it any, between the turns of pipe 1'9. This condition 1prevailing the we s of the duct are practical y imperforate.

The cap has a depending flange 0 thereon, which tits over the upper ends of the ac standards 20. At the lower end of the duct A is a skirt d of sheet metal, said skirt'being fastened to the standards 20 by the lowermost bolts 23 therein. Being thus secured to the supporting standards 20, the skirt d, 25 in turn, supports the inner duct B, through the medium of the branch ducts 11, 12 any suitable connection being made between said branch ducts and shirt as by means of fastenors 27.

From the foregoing, it will be understood that the parts of my appliance may be readilyand economically constructed of stock materials and easily assembled.

My improvement is most frequently put to use in the conditioning of the air in storage rooms, whereby refrigeration is accompanied with internal circulation, mixed internal circulation and ventilation, or ventilation. lln thus employing theapplianoe a an refrigerating medium is directed through the maniiol s 24, 25 into and out of the duct sections a, such sectiom,-= -as desired, being s selectively employed through the manipulav tion of the valves 26. I'llnternal, refrigerated til circulation of air in a room is accomplished by closing the damper 18% in the branch-duct 15, removing the plug 1 from the thimble 16 in said branch-duct, closing the damper 13- in the branch-duct 11 and'removing the plug 1d in the. branch-duct 12. Mixed re trigeratad ventilation and internal circulation is accomplished in changing the adjustment, above noted, by opening the dampers 13,18 partially or: fully, said condition he mg converted to that of refrigerated ventilation by applying the plugs 14:, 17. In thus employing t e device as a refrigerating elelift ' meat the valve as of any section A may be adjusted to tally or partially open that perticular section to the inlet manifold 24 or to entirely out ch the-same therefrom. This feature provides for economically and ellleetively meet a dillierent operating requirements. The a ill to de-lrost the sections a or the duct A wit out interrupting the operaecaoce ation of the appliance is one advantage of the resent structure. Selectively controlled by t e valves 26, these sections a may be shut oil, at will, from the source of supply of refrigerating' medium, thus allowing the frost on the section or sections a, in disuse as conductors for said medium, to melt, whereby better results may be obtained from the medium in the refrigerating process. In this connection it will be noted that l contemplate the provision in a duct of one section within another, each consisting of pipe turned coil upon coil, the pipe of each section having an individual cut-ed valve fitted thereto and permitting oil the selective regulated use or the disuse of said sections.

Under heating, with a suitable heating medium flowing through the pipes 19 of the duct sections a, conditions of circulation and ventilation, as above explained, may be had. The flow of air in such cases will be upward through the ducts A, 18, instead of downward therethrough, as under refrigeration, use of the dampers 13, 18 and plugs 14, 17 being made according to the condition desired. In this connection it will be understood that the valves 26 controlling the coil sections a may be operated under heating, the same as under refrigeration, whereby immediate and selective control of the individual coil sections a is broughtabout.

Changes in the specific form of my invention, as herein disclosed, mav be made within the scope of what is claimed without departin from the sprit oil my invention.

aving described my invention, what ll ill claim as new and desire to protect by Letters Patent is: 7

.1. la an appliance of the class described, a duct for directing air from one level to another consisting of a plurality of superimposed sections, each section comprising a length of pipe coiled turn udponturn, spaced standards supporting said not sections, tying the turns thereof together and uniting said sections in a unitary structure, an inlet manifold'for a temperature adecting medium, said manifold being connected with one end of each coiled pipe and supported therethrough by said standards,and an outlet manifold connected with each of the other ends of said coiled pi es and also supported therethrough b sai standards.

2. In an app iance of the class described, an outer duct structure formed of pipe coiled, turn upon turn, and spaced standards supporting said pipe and tying together the turns thereof and an inner duct passing through and carried by said outer duct structure.

"existing of a coiled pipe, means for introducldd ing a refrigerating medium into the pi es of said sections, selectively, the pipe 0 each section having spaces between the turns thereof restricted to permit of the frosting over of the same in the presence of a refrigerating medium in the pipe. the introduction of said medium to said sections in different combinations thereof providing a tight walled duct. the upper and lower ext-remities thereof varying in elevation.

In testimony whereof, I have signed my name to this specification.

CHARLES A. MOORE. 

